HEAT oven to 350° F. Grease a 9x9 or 9x13-inch baking pan.COMBINE chocolate and butter in a large saucepan. Heat over low heat until melted, stirring occasionally. Remove from heat.STIR in sugar; mix well. Add eggs and vanilla; blend well.MIX flour and raisins until evenly combined. SPREAD into prepared pan.BAKE 9x9-inch pan for 25 to 30 minutes or 9x13-inch pan for 18 to 22 minutes until top feels set when gently touched. Cool completely.CUT brownies with a sharp knife into approximately 1-1/4 x 2-1/2 inch pieces. Cut rounded corners on one short edge to shape a tombstone.DECORATE tombstones with icing as desired. Arrange tombstones upright on tray to create graveyard (apply small amount of icing on bottom of brownies to stick to tray if necessary).